<div dir="ltr">The same assumptions that one solution is the only possible solution.  What happens if the Skylon effort fizzles?  What other options are there that might provide equivalent capability?  (Start with other spaceplanes with similar lift but being developed by different teams.)<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Sep 9, 2014 at 3:24 PM, Keith Henson <span dir="ltr"><<a href="mailto:hkeithhenson@gmail.com" target="_blank">hkeithhenson@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">New article on power satellites, specifically how to get millions of<br>
tons of parts to GEO for less than $200/kg.<br>
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<a href="http://theenergycollective.com/keith-henson/485571/power-satellite-progress" target="_blank">http://theenergycollective.com/keith-henson/485571/power-satellite-progress</a><br>
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Please comment if you can think of something to say.<br>
<br>
Keith<br>
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